A man known as "Professor Gizmo," smokes marijuana in a glass pipe, Wednesday, Dec. 5, 2012, just before midnight at the Space Needle in Seattle. Possession of marijuana became legal in Washington state at midnight, and several hundred people gathered at the Space Needle to smoke and celebrate the occasion, even though the new law does prohibit public use of marijuana.

Photo: Ted S. Warren, Associated Press

A man known as "Professor Gizmo," smokes marijuana in a glass pipe,...

A man known as "Professor Gizmo," smokes marijuana in a... Photo-3853336.53498 - SFGate

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A resident of Tacoma, Washington smokes marijuana shortly before a law legalizing the recreational use of marijuana took effect on December 5, 2012 in Seattle, Washington. Voters approved an initiative to decriminalize the recreational use of marijuana making it one of the first states to do so.

Russ Belville, an Internet radio host from Portland, Oregon, counts down to midnight shortly before a law legalizing the recreational use of marijuana took effect on December 5, 2012 in Seattle, Washington. Voters approved an initiative to decriminalize the recreational use of marijuana making it one of the first states to do so.

Photo: Stephen Brashear, Getty Images

Russ Belville, an Internet radio host from Portland, Oregon, counts...

A Tacoma resident rolls a joint shortly after a law legalizing the recreational use of marijuana took effect on December 6, 2012 in Seattle, Washington. Voters approved an initiative to decriminalize the recreational use of marijuana making it one of the first states to do so.

Photo: Stephen Brashear, Getty Images

A Tacoma resident rolls a joint shortly after a law legalizing the...

A Tacoma resident rolls a joint shortly after a law legalizing the... Photo-3853349.53498 - SFGate

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Gary Parrish smokes marijuana in a glass pipe, Thursday, Dec. 6, 2012, just after midnight at the Space Needle in Seattle. Possession of marijuana became legal in Washington state at midnight, and several hundred people gathered at the Space Needle to smoke and celebrate the occasion, even though the new law does prohibit public use of marijuana.

A Seattle resident takes marijuana from a plastic bag shortly after a law legalizing the recreational use of marijuana took effect on December 6, 2012 in Seattle, Washington. Voters approved an initiative to decriminalize the recreational use of marijuana making it one of the first states to do so.

A Tacoma resident smokes marijuana shortly after a law legalizing the recreational use of marijuana took effect on December 6, 2012 in Seattle, Washington. Voters approved an initiative to decriminalize the recreational use of marijuana making it one of the first states to do so.

Photo: Stephen Brashear, Getty Images

A Tacoma resident smokes marijuana shortly after a law legalizing...

A Tacoma resident smokes marijuana shortly after a law legalizing... Photo-3853353.53498 - SFGate

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Jared Cruver of Snohomish, Washington smokes marijuana from a mini water pipe shortly after a law legalizing the recreational use of marijuana took effect on December 6, 2012 in Seattle, Washington. Voters approved an initiative to decriminalize the recreational use of marijuana making it one of the first states to do so.

Paul of Tacoma, who declined to give his last name smokes marijuana from a water pipe underneath the Space Needle shortly after a law legalizing the recreational use of marijuana took effect on December 6, 2012 in Seattle, Washington. Voters approved an initiative to decriminalize the recreational use of marijuana making it one of the first states to do so.

Photo: Stephen Brashear, Getty Images

Paul of Tacoma, who declined to give his last name smokes...

Paul of Tacoma, who declined to give his last name smokes... Photo-3853356.53498 - SFGate

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Robyn Bowen of Seattle Washington smokes marijuana underneath the Space Needle shortly after a law legalizing the recreational use of marijuana took effect on December 6, 2012 in Seattle, Washington. Voters approved an initiative to decriminalize the recreational use of marijuana making it one of the first states to do so.

A resident of Seattle smokes marijuana as he is photographed shortly before a law legalizing the recreational use of marijuana took effect on December 5, 2012 in Seattle, Washington. Voters approved an initiative to decriminalize the recreational use of marijuana making it one of the first states to do so.

Photo: Stephen Brashear, Getty Images

A resident of Seattle smokes marijuana as he is photographed...

A resident of Seattle smokes marijuana as he is photographed... Photo-3853358.53498 - SFGate

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Dustin, left, and Paul of Tacoma, Washington, both of which declined to give their last names, share a water pip underneath the Space Needle shortly after a law legalizing the recreational use of marijuana took effect on December 6, 2012 in Seattle, Washington. Voters approved an initiative to decriminalize the recreational use of marijuana making it one of the first states to do so.

Photo: Stephen Brashear, Getty Images

Dustin, left, and Paul of Tacoma, Washington, both of which...

Dustin, left, and Paul of Tacoma, Washington, both of which... Photo-3853361.53498 - SFGate

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Andre Edwards smokes marijuana, Thursday, Dec. 6, 2012, just after midnight at the Space Needle in Seattle. Possession of marijuana became legal in Washington state at midnight, and several hundred people gathered at the Space Needle to smoke and celebrate the occasion, even though the new law does prohibit public use of marijuana.